Date-to-date calculator

Days between dates

Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.

The end date comes before the start date

27,857 days

From Tuesday, December 12, 2102 to Friday, September 4, 2026.

Monday–Friday weekdays19,897
Weeks and days3,979w 4d
Calendar span76 years, 3 months, 8 days

Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.